Question: An Auditor selected a random sample of 12 accounts from all accounts receivable of a given firm. The Amounts of the accounts in dollars are as follows: 87.50, \(123.10\), 45.30, 52.22, 213.00, 155.00, 39.00, 76.05, 49.80, 99.99, 132.00, 102.11. Compute an estimate of the mean amount of all accounts receivable. Give an estimate of the variance of all the amounts.